Re: [PATCH v4 1/5] usb: host: export symbols for xhci-exynos to use xhci hooks

[kernel test robot <lkp@intel.com>]

Hi Daehwan,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on usb/usb-testing]
[also build test WARNING on krzk/for-next char-misc/char-misc-testing v5.18-rc4 next-20220426]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/intel-lab-lkp/linux/commits/Daehwan-Jung/usb-host-export-symbols-for-xhci-exynos-to-use-xhci-hooks/20220426-181936
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220426/202204262306.mzMIKFKO-lkp@intel.com/config)
compiler: arceb-elf-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/05a4937860cedb97b77200b7312a6f009aca2fc6
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Daehwan-Jung/usb-host-export-symbols-for-xhci-exynos-to-use-xhci-hooks/20220426-181936
        git checkout 05a4937860cedb97b77200b7312a6f009aca2fc6
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash drivers/usb/host/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   drivers/usb/host/xhci-mem.c:68:6: warning: no previous prototype for 'xhci_segment_free' [-Wmissing-prototypes]
      68 | void xhci_segment_free(struct xhci_hcd *xhci, struct xhci_segment *seg)
         |      ^~~~~~~~~~~~~~~~~
   drivers/usb/host/xhci-mem.c:100:6: warning: no previous prototype for 'xhci_link_segments' [-Wmissing-prototypes]
     100 | void xhci_link_segments(struct xhci_segment *prev,
         |      ^~~~~~~~~~~~~~~~~~
>> drivers/usb/host/xhci-mem.c:261:6: warning: no previous prototype for 'xhci_remove_stream_mapping' [-Wmissing-prototypes]
     261 | void xhci_remove_stream_mapping(struct xhci_ring *ring)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/usb/host/xhci-mem.c:1974:5: warning: no previous prototype for 'xhci_check_trb_in_td_math' [-Wmissing-prototypes]
    1974 | int xhci_check_trb_in_td_math(struct xhci_hcd *xhci)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~


vim +/xhci_remove_stream_mapping +261 drivers/usb/host/xhci-mem.c

   260	
 > 261	void xhci_remove_stream_mapping(struct xhci_ring *ring)
   262	{
   263		struct xhci_segment *seg;
   264	
   265		if (WARN_ON_ONCE(ring->trb_address_map == NULL))
   266			return;
   267	
   268		seg = ring->first_seg;
   269		do {
   270			xhci_remove_segment_mapping(ring->trb_address_map, seg);
   271			seg = seg->next;
   272		} while (seg != ring->first_seg);
   273	}
   274	EXPORT_SYMBOL_GPL(xhci_remove_stream_mapping);
   275	

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